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/*
* Tests that the server doesn't crash when you group by a system variable.
* Reproduces SERVER-57164.
*/
(function() {
"use strict";
function testAggWithSystemVariable(varName, explain) {
try {
// This query might or might not throw depending on the engine used
// and whether the variable is defined.
if (explain)
call.explain().aggregate({$group: {_id: varName}});
else
call.aggregate({$group: {_id: varName}});
} catch (e) {
} finally {
// Make sure the server didn't crash.
db.hello();
}
}
testAggWithSystemVariable("$$IS_MR", true);
testAggWithSystemVariable("$$JS_SCOPE", true);
testAggWithSystemVariable("$$CLUSTER_TIME", true);
testAggWithSystemVariable("$$IS_MR");
testAggWithSystemVariable("$$JS_SCOPE");
testAggWithSystemVariable("$$CLUSTER_TIME");
})();
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